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Apart from this LISP, you might find modelling everything in modelspace and setting up the drawing in paperspace so much more versatile. For your problem above a viewport in paperspace makes sense, then any changes to the detail will be reflected in the viewport rather than having to recreate the detail block.

Oh, you want to see a detail in a bigger scale. My first idea: Put a circular viewport in paper space and give it double/triple/... scale. https://thecadgeek.com/blog/creating-circular-viewports/

*s* remains for the future as a small device abandoned on the moon that, perhaps one day, will be used by the next visitor.

Hi @pkenewell I don’t use tangents. For straight segments, the geometry progresses or retreats based on the angular direction of the lateral segments of the selected one. For arc segments, in order to “link” them, progression and retreat are done based on the radius. The variable *s* is currently single-use if passed to the second part of the command, outside of GRREAD. The code is like a living being: it’s born with the idea of following a path, and along the way, it chooses a different route. So *s* was implemented with the intention of providing a complete solution within GRREAD, and along the way, the current solution was chosen instead.